Eyeglasses.



Patented A rgzz', 1902;

H. 0. mouse".

EYEGLASSES.

(Application filed Mar. 28, 1901.)

(No Mpdel.)

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UNITED- STATES PATENT. f OFFICE.-

HENRY o. THOMSON, or BOSTON, MASSACHUSETTS.

, EYEGLASSES.

V SPECIFICATION forming part of Letters Patent No. 698,078, dated April22, 1902.

Application filed March 28. 1901.

To all whom it may concern:

Be it known that I, HENRY O. THOMSON, a citizen of the United States,residing at 130s"- ton, Suffolk county, State of Massachusetts, haveinvented a new and useful Improvement in Eyeglasses, of which thefollowing is a description.

My invention relates to the means of hold-v ing the lenses of eyeglassesin such position and with such fixity that oscillation, looseness ofsetting, and the coming out of any of the screws will be avoided. 1

My invention as an entirety consists in a spring-piece of resilientmetal having a base properly perforated and projecting ends thereofcurved like the lenses and. spring clamping-arms, and this entirety ismade up of parts which may be separately used.

My invention will be easily understood by reference to the accompanyingdrawings, in

I which- Figure 1 is a plan of a pair of rimless eyeglasses including myinvention in its en'- tirety. Fig. 2 is a horizontal sectional view' ofpart of Fig. 1. Fig. 3 is a view in perspective of my entire invention,excepting one screw. Fig. 4 is a plan of a lens and its metallicsupporting parts as ordinarily made. Fig. 5 is a View in perspective ofa part of my entire device as shown in Fig. 3; and Fig. 6 is a plan of apart of that part of myinvention shown in Fig. 5 placed in the ordinaryholding device.

' Similar letters refer to similar parts in the figures.

A is a rimless lens.

B is the ordinary holding sprin g or piece, of any desired construction,either integral or composed of two pieces passing each other and held bythe screw G.

O O are the ordinary nose-guards.

D is the ordinary metal clamp by which, as illustrated in Fig. 4:, thelens A is usually sustained.

D is the shank.

E being my entire device, as shown in Fig. 8, is made up of the washerpart F, so perforated at f as to enable it to lock the termination g ofthe screw G, the vertical curved extensions f f, and the lateralspring-clamps e e, perforated (or slotted, if preferred) at d.

Serial No. 5 3,310. (No model.)

The function of this spring-clamp e e is to 'hold the screw 61 fromturning. I

G is a holding-screw and has a square or other irregular'projecting partg, adapted to fit into the perforation or slot f whereby the screw Gwill be prevented from turning.

It will be seen that in Fig. 5 the metal hold-- ing-piece has only thewasher part F perforated at f and the spring-arms e 'e perforated at dd, but does not have theprojecting arms ff.

In'Fig. 6 it will be seen that the metal hold there is also shown inFig. 6 the washer part F, erforated at omittin the s rin -arms P s P o ee and the extension-arms ff.

If the entire device shown in Fig. 3 beused,

it is evident that the screwG is permanently.

held from turning by.the. locking between g and f, and the screw d isheld from turning by the spring-cla'mpe e, and the same is true if onlythe parts shown in Fig.5 be used. .If

' only the washer. part F, perforated at f, of

Fig.- 6 be used, that washer will prevent-the screw G from turning,because itself held I from turning by being placed between the arms D Dof the ordinary holding device. It will also be seen that as shown inFig. 1 my entire device as shown in Fig. 3 is placed within theordinaryjaws or holding-pieces D, I

omitting the ordinary extensions f shown in Fig. 4, for which theextensions f f are used. It will also be observed that by myconstructionit is not necessary to groove the edge of the lens.

Having described my invention, what I claim is I 1. In an eyeglass, incombination with the usual nose-guard, bow, lens, and holdingclamp,awasher F, having the angular'perfo ration f placed vertically betweenand held rigidly by the projecting arms of the holdingclainp against theedge of the lens, and a holding-screw-G having its termination g, adapted to fit said perforation'f to prevent said holding-screw G fromturning; substantially as described.

2. In an eyeglass, in combination with the nose-guard, bow, lens, andusual holdingclamp, a spring-clamp having the part F angularlyperforated at f, and having also the spring-arms e a perforated at d cl,and a holding-screw G having its termination 1 adapted to fit theperforation f to prevent said holding-screw G from turning;substantially as described.

3. In an eyeglass, in combination with the usual nose-guard, bow, lens,and holdingclamp, a spring-clamp E, composed of the part F angularlyperforated at f, and having also the extensionsf f and the spring-arms ee perforated at d d, and the screw G having its termination g adapted tofit the perforation f to prevent said holding-screw G from turning;substantially as described.

In witness whereof I hereunto set my hand this 25th day of March, 1901.

HENRY C. THOMSON. In presence of-- CHARLES H. HANSON, FRED C.OHAMBERLIN.

